Three-quarter view of a rectangular variable air volume control damper

Системы распределения воздуха в чистых помещениях

Переменный амортизатор управления объемом воздуха

A sensor-equipped modulating damper that compares measured airflow with a remote setpoint and repositions opposed blades as demand changes.

Closed-Loop Airflow Control
Averaging Pressure Sensor
Modulating Opposed Blades
BMS Setpoint Interface

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Введение продукции

The variable air volume control damper combines a rectangular galvanized casing, opposed control blades, an averaging differential-pressure sensor and a matched electronic controller-actuator assembly. Pressure measured at several points across the inlet is converted into an airflow signal and compared with the commanded setpoint. The actuator then moves the blade bank until the measured value returns to the required range. Replaceable edge seals and enclosed blade gears support low-leakage shut-off and keep the linkage outside the main airstream.

Основные характеристики

Multi-point effective-pressure sensing averages the inlet profile instead of relying on a single pressure tap.

Opposed airfoil blades provide progressive modulation across a broad minimum-to-maximum airflow range.

The controller can accept an analog or digital setpoint for temperature, occupancy or room-pressure sequences.

External electronics, shaft indication and replaceable seals simplify functional checks without removing the damper.

Обеспокоенность клиентов продуктами

Accurate VAV control depends on a usable sensor signal, stable inlet conditions, correct actuator authority and a minimum airflow that protects the room process.

A single pressure pickup reports an incorrect flow value behind an elbow.An averaging sensor samples several locations and a straight inlet section reduces profile distortion.

The actuator hunts because the controller gain is too aggressive for the duct response.Matched actuator timing and tuned control parameters provide stable movement around the airflow setpoint.

Closing below the validated minimum airflow disrupts room pressure and dilution.Programmable minimum and maximum limits keep the commanded airflow inside the operating envelope.

Blade leakage prevents an unused branch from isolating during setback.Tip and jamb seals combined with opposed blades improve shut-off when the controller receives a close override.

Типичные приложения

Cleanroom supply-air modulationLaboratory room exhaust controlPressure-cascade airflow trackingDemand-controlled pharmaceutical support roomsVariable-volume healthcare ventilation

Технические параметры

Typical mechanical construction ranges for a rectangular electronic VAV control damper are listed below.

Основной материал	Galvanized-steel opposed control blades with TPE seals and aluminum averaging pressure sensor
Толщина панели	0.8–1.5 mm blade and casing components
эффективная ширина	200–1000 mm nominal rectangular airway width
Максимальная длина	Up to 1200 mm casing length with acoustic cladding or service section
Толщина линий стали	0.8–1.0 mm galvanized external casing sheet
Плотность ядра	Approximately 7850 kg/m³ for the galvanized steel blade bank
Теплопроводимость	Approximately 45–55 W/(m·K) for the steel airflow components
Поверхностная отделка	Galvanized casing with corrosion-protected gears, shaft and actuator bracket
Объединенный тип	Double-flanged casing with geared opposed blades, replaceable seals and external direct-coupled actuator
Customization	Доступно в зависимости от предполагаемого применения и операционной среды.

Доступные варианты

Analog 0–10 V or digital network controlRoom-pressure or duct-pressure control programAcoustic casing and downstream attenuatorLow-leakage blade seals and spring-return actuator

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